Alarm for tin-cleaning machines.



I u. u.-u-L-AM.' ALARM FOR TIN C L EANINQ MACHINES.

. APPLICATION FILED Hov."4. I918.-

Patented Aug'. 1

9,1919. 3 SHEETS-SHEET 1.

U. U. ULAM. ALARMFOR TIN VICLEANING MACHINES.

APPLICATION FILED NOV. 4,-l9l8- 4 I Patented Aug. 19, 1919.

1,313,766. I v 3 SHEETSSHEET 2- anmwboz Zia. 8/. 07617 1 wumm u. u. UL AM. ALARM FOR TIN. CLEANING MACHINES.

\ APPLICATION men NOV. 4. 1918. 1,313,766.

Patented Aug. 19, 1919.

3 SHEETSSHEE T s.

URA U. ULAM, OF CHESTER, WEST VIRGINIA.

ALARM FOR TIN-CLEANING MACHINES.-

Specification of Letters Patent.

Patented Aug.19, 1919.

Application filed November 4, 1918. Serial No. 261,028.

(/To all whom it may concern:

Be it known that I, Una U. ULAM, a citizen f the United States, residin at Chester, 11 the county of Hancock anc State of West" Virginia, have invented new and use ful Improvements in Alarms for Tin-Gleam ing Machines, specification.

This invention relates to alarm-devices, and has forits object the provision of an electric alarm or signal adapted for use in connection with machines for cleaning sheets of tin whereby an alarm will be given in the event of cobbling of any of the sheets passing through the machine. More specifically the object of the invention resides in the provision of a plurality of contact members extending between the rollers of a tin cleaning machine in position to be engaged by a sheet during cobbling or buckling thereof, these contact members being arranged in a circuit including a source of current and an alarm or signal.

An important object is the provision of a device of this character in which the various contact members are adjustably mounted so that their positions between tie rows may be varied and so that the distance between their ends and the sheet passing through the machine may be regulated.

A further object is the provision of a device of this character which will be simple and inexpensive in manufacture and installation, which will be eiiicient in use, durable in service and a general improvement in the art.

With the above and other objects and advantages in view, the invention consists in the details of construction to be hereinafter more fully described and claimed, and illustrated in the accompanying drawings in which Figure 1 is a sectional View through a tin cleaning machine showing my device applied thereto.

Fig. 2 is a cross sectional view.

Fig. 3is a perspective view of one of the contact supports.

Fig. 4 1s a perspective view of one of the contacts Fig. 5 is a diagram of the circuit showing the use of a bell as a signal 'or alarm.

Fig. 6 is a sectional view through a tin cleaningmachine provided with a plurality.

of which the following is a cessive ro of upwardly extending'contact members in addition to the series of downwardly extending contact members.

Fig. 6 is a diagrammatic view showing the two sets of contact members of Fig. 6 arranged in branch circuits.

Fig. 7 is a plan view of a type of slide used in this character of machine and provided with contact members.

Fig. 8 is adetail view illustrating a modified form of lower contact members.

Fig. 9 is a somewhat diagrammatic sectional view through a tin cleaning machine showing a modified form of contact member.

Fig. 10 is a detail view through one pair of the contact members shown in Fig. 9, and

Fig. 11 is a cross sectional view showing another modified form of lower contact members.

Referring more particularly to the drawings, and especially to Figs. 1 to 5, inclusive, the letter A designates a machine for cleaning sheets of tin, this machine including a. casing formed-of side and end walls B and C, respectively. Journaled within the casing are coacting rolls D between which the sheets of tin E are passed during the cleaning operation. The nieans for rotating the coacting rolls D and the other mechanism. connected with the device are not shown, as forming no part of the present invention.

In machines of this type it frequently occurs that a sheet of tin in passing through the series of coacting rolls will cobble or buckle and not only be distorted and consequently rendered useless, itself, but will also ruin other sheets subsequently fed into the madhine until the machine is stopped and all the cobbled or buckled sheets removed.

ln carrying out my a pair of supporting wood or other suitable insulatin material, which are disposed longitudina ly oi the casing of the machine and which are socured upon the top edges of the end walls C by any suitable means. The bars 10 are provided with a plurality of elongated slots 11 through which pass clamping screws 12 which extend through elongated slots 13 in the upper ends of metallic contact members 14 which extend downwardly within the casing of the lls D and which are so positioned lower extremities disposed invention I provide bars 10, formed of as to have their machine between the sucis divided so that contact members slightly above the plane of the sheets of tin passing between the coacting rolls. All the contacts 14 carried by one bar 10 are connected by a wire 15 and all the contacts carried by the other bar 10 are connected by a wire 16. The wire 15 is connected with one pole of a source of current 17 which has its other pole connected with one terminal of a bell 18', or other suitable signal, and the wire 16 is connected to the other terminal of the bell. v

a In the event that any sheet E of tin passing through the machine should cobble or buckle upwardly, it will engage against the lower ends of the adjacent pair of contacts 14 and form a bridge between them, closing the circuitthrough the bell 18 or whatever signal it is desired of course apprise the operator of the machine that a sheet has cobbled or buckled and he may then of course shut down the machine and remove the defective sheet before further damage is done.

The provision'of the elongated slots 11 in the supporting bars 10 and the slots 13 in the contact members 14 is very important as by means of the clamping screws 12 pass,- ing through these slots, the contact members It may be adjusted vertically so that the position of their lower ends in respect to the plane of the sheets of tin passing through the machine may be regulated and the contact members 14; may also be adjusted longitudinally of the supporting bars 10 so that they will be disposed in the mosteffective positions in respect to the adjacent rolls D.

While I have shown my device adapted for ringing a bell, it will of course be understood that I may make use of any other desired form or signal 'or may provide some electrically operated device for automatically cutting off the driving power of the machine when the'circuit is closed through the contact by buckling or cobbling of a sheet. a 7

Referring more particularly to Fig. 6 of the drawings it will be seen that in addition to the upper supporting bars 10 and the 14 depending therefrom,. I have provided lower supporting bars 20 which are disposed in the bottom of the machine and which are provided at spaced intervals with a plurality of upwardly extending contact members 21 which are disposed between the pairs of co-acting rolls and which have their ends terminating .below the plane of travel of the sheets passing be- In this form of the detween the rolls. vice, by referring to Fig. 6 it will be seen that the current passing from the cells a portion thereof will pass through the contactmembers 21 as well as through the contact members 14. When a machine is equipped with this to employ. This will.

" ends oflits arms .gaged upon the have provided a modified form of means for securing the lower contact members within the casing-of the lower supporting members 24 are suitable rods or bars which have laterally directed as shown at 25 and suitably bolted upon the casing of the machine as shown at 26. In this form, the bar 24 is provided with a plurality ofupwardly ex-' tending contact members 27. This type of support may be used to extend longitudinally of the machine with the contact members 27 disposed between the successive pairs of rolls or it may be used to extend transversely of the machine with all members 27 on each bar disposed between two successive pairs of rolls. connection in this formmay be'such as will be found most advantageous in service.

Referring to Figs. 9 and 10 it will be seen that I have provided a-still further modified form of means for supporting the contact members. In this form I provide upper and lower bars 28 and 29 respectively which extend transversely of the machine and which are arranged preferably'in vertical alinement with each other. The upper bars 28 have secured thereon and insulated therefrom contact members 30 and 31 which are arranged in pairs and the lower bars 29 have secured thereon and insulated therefrom upwardly extending contact members 32 and 33 likewise arranged in pairs. With this arformed as rangement, all the contacts 30 and 32 are In Fig. 11 I have shownthe lower contact members 34 as extending upwardly from a U-shaped supporting bar 35 which has the laterally directed and-entop of the casing and securedin position by suitable screws 36: This arrangement permits the lower contact supporting'b-ar to depend entirely from the top of the casing. The u per contact members may be supported in t e sameway. The operation of this form is of course the same as in the other forms.

machine. In this form, the...

of the contact The electrical In the event of buc their ends Having thus described my invention I claim 1- r 1. In combination with a tin'eleaning machine including a casing and a series of coacting rolls journaled therein and engaging upon opposite sides of sheets of tin passing through the machine; an alarm mechanism 2. In combination with a tin cleaning machine including a casing and a plurality of co-acting rolls journaled therein and adapted for engagement with the opposite sides of sheets of tin passing through the machine; an alarm mechanism comprising a pair of spaced, supporting members ongaged upon the top of said-casing, and a plurality of contact members connected with and depending from said supporting members, said contact members being disposed between the successive rolls and terminating adjacent the plane of movement of said sheets between said rolls, said contact members being included in a circuit including a source of current and a signal device.

3'. In combination with a tin cleaning machine including a casing and a plu'ality chine, including of co-acting rolls journaled therein and enmechanism comprising a pair of spaced supporting members engaged upon the top 0t said casing and a plurality of vertically adjustable contact members depending from said supporting members and disposed between the successive rolls, the lower ends of said contacts terminating adjacent the normal plane of movement of said sheets, and said contact members being arranged in a circuit including a source of current and a signal.

t. In combination with a tin cleaning maa casing and a plurality of coacting rolls 'journaled therein and engaging upon opposite sides of sheets of material passing through the machine; an alarm mechanism comprising a pair of spaced supporting members engaged upon the top of said casing, a plurality of vertically adjustable contact members depending from said supporting members and arranged between the successive rolls with their lower ends terminating ad'acent the normal plane of movement of said teeth, means whereby said contact members may be adjusted longitudinally 0t said supporting members, and said contact members being arranged in a circuit including a source of current and a signal.

In testimony whereof I affix my signature.

URA U. ULAM. 

